Large copper and gold iridescent Caloceras display ammonite iridescent and the mix of yellow

and the mix of yellow and brown colours is beautiful

These ammonites are becoming much harder to find these days due to lack of erosion of the right layers of rock

The piece of limestone matrix measures 198 mm (7

It has a beautiful pyritic metallic shine

There is a predation bite in the outer whorl where a Jurassic predator bit into the ammonite and killed it

Large copper and gold iridescent Caloceras display ammonite iridescent and the mix of yellowA stunning and perfect example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 210 mm (8. 25 inches) across and contains half an ammonite shell that measures 90 mm (3. 6 inches), which is large for this species. The shell sits in the original limestone matrix in which it was found which has been shaped and has a cut flat base to allow it to stand freely by itself for display. The